Move cursor to target area. Press 'z', 'a', or 'q' to fire from the left missile base. Press 'x', 's', 'w' to fire from the middle missile base. Press 'c', 'd', or 'e' to fire from the right missile base.

Missiles from the left and right bases travel slower than the missiles from the center base. You acquire points for the missiles and cities you have remaining at the end of each round.